﻿using System;

namespace ProblemsSet
{
    public class Problem_19 : BaseProblem
    {
        public override object GetResult()
        {
            //Super solve :)))
            var tmp = new DateTime(1901, 1, 1);
            long countSunday = 0;
            while (tmp.Year < 2001)
            {
                if (tmp.DayOfWeek == DayOfWeek.Sunday) countSunday++;
                tmp = tmp.AddMonths(1);
            }
            return countSunday;
        }

        public override string Problem
        {
            get
            {
                return @"You are given the following information, but you may prefer to do some research for yourself.

1 Jan 1900 was a Monday.
Thirty days has September,
April, June and November.
All the rest have thirty-one,
Saving February alone,
Which has twenty-eight, rain or shine.
And on leap years, twenty-nine.
A leap year occurs on any year evenly divisible by 4, but not on a century unless it is divisible by 400.
How many Sundays fell on the first of the month during the twentieth century (1 Jan 1901 to 31 Dec 2000)?";
            }
        }

        public override bool IsSolved
        {
            get
            {
                return true;
            }
        }

        public override object Answer
        {
            get
            {
                return 171;
            }
        }

    }
}
